Messages in this thread | | | Date | Wed, 31 May 2017 11:15:53 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH v5 32/32] x86/mm: Add support to make use of Secure Memory Encryption |
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On Tue, May 30, 2017 at 10:48:27AM -0500, Tom Lendacky wrote: > I'll look at doing that instead of removing the support for the whole > file.
Right, so I don't think the stack protector is even ready that early - we do set it up later:
/* Set up %gs. * * The base of %gs always points to the bottom of the irqstack * union. If the stack protector canary is enabled, it is * located at %gs:40. Note that, on SMP, the boot cpu uses * init data section till per cpu areas are set up. */ movl $MSR_GS_BASE,%ecx movl initial_gs(%rip),%eax movl initial_gs+4(%rip),%edx wrmsr
so I think marking the function "no-stack-protector" is the only option right now. We can always look at fixing that later.
-- Regards/Gruss, Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
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